LC3 assembly-how to print the next character of a character -


my aim create program receives letter , prints "next letter".to more specific,if input "p",the output should "q". code:

.orig x3000 lea r4,data ldr r0,r4,#0 add r0,r0,#1 trap x21 halt  data .fill x5001 .end

x5001 has "p",i have checked it.so exmpecting see "q" output.however,i strange looking symbol p instead!what's wrong code?thank in advance.


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